Workbook Detail
Subtraction Within 20 Starter — Set 46
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"operand1": 19,
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"question": "19 - 7 = ___",
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"operand1": 14,
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"operator": "-",
"question": "14 - 1 = ___",
"answer": 13
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"operand1": 18,
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"question": "18 - 11 = ___",
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"operand1": 4,
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"question": "4 - 2 = ___",
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{
"id": 7,
"operand1": 18,
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"question": "18 - 16 = ___",
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{
"id": 8,
"operand1": 16,
"operand2": 2,
"operator": "-",
"question": "16 - 2 = ___",
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{
"id": 9,
"operand1": 2,
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"operator": "-",
"question": "2 - 1 = ___",
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"id": 11,
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"question": "14 - 2 = ___",
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"id": 12,
"operand1": 2,
"operand2": 1,
"operator": "-",
"question": "2 - 1 = ___",
"answer": 1,
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{
"id": 13,
"operand1": 11,
"operand2": 1,
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"question": "11 - 1 = ___",
"answer": 10
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"id": 14,
"operand1": 4,
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"question": "4 - 3 = ___",
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{
"id": 15,
"operand1": 17,
"operand2": 2,
"operator": "-",
"question": "17 - 2 = ___",
"answer": 15
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{
"id": 16,
"operand1": 15,
"operand2": 3,
"operator": "-",
"question": "15 - 3 = ___",
"answer": 12
},
{
"id": 17,
"operand1": 9,
"operand2": 8,
"operator": "-",
"question": "9 - 8 = ___",
"answer": 1,
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{
"id": 18,
"operand1": 15,
"operand2": 2,
"operator": "-",
"question": "15 - 2 = ___",
"answer": 13
},
{
"id": 19,
"operand1": 20,
"operand2": 10,
"operator": "-",
"question": "20 - 10 = ___",
"answer": 10
},
{
"id": 20,
"operand1": 18,
"operand2": 1,
"operator": "-",
"question": "18 - 1 = ___",
"answer": 17
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}Teaching Notes
19
-7
8
-6
16
-1
14
-1
18
-11
4
-2
18
-16
16
-2
2
-1
2
-1
14
-2
2
-1
11
-1
4
-3
17
-2
15
-3
9
-8
15
-2
20
-10
18
-1
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